Add workflow_dispatch to release workflow

Author: aeisenberg

.github/workflows/release.yml

@@ -6,19 +6,15 @@
 
 name: Release
 on:
+  pull_request:
+    paths:
+      - '**/workflows/release.yml'
+
+  workflow_dispatch:
+
   push:
-    # Path filters are not evaluated for pushes to tags.
-    # (source: https://help.github.com/en/github/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#onpushpull_requestpaths)
-    # So this workflow is triggered in the following events:
-    # - Release event: a SemVer tag, e.g. v1.0.0 or v1.0.0-alpha, is pushed
     tags:
       - 'v[0-9]+.[0-9]+.[0-9]+*'
-    # OR
-    # - Test event: this file is modified on a branch in the main repo containing `/actions/` in the name.
-    branches:
-      - '**/actions/**'
-    paths:
-      - '**/workflows/release.yml'
 
 jobs:
   build: